MITSUBISHI ICs (TV)
M52765FP
PLL-SPLIT VIF/SIF IC
5. AGC Control Range: GR
GR = VIN MAX - VIN M IN
(dB)
6. RF AGC Operating Voltage: V3
Input SG8 into VIF IN and gradually reduce Vi and then measure the input
level when RF AGC output TP3 reaches 1/2 VCC, as shown below.
TP3
Voltage
V3H
1/2VCC
V3L
Vi(dBµ)
Vi
7. Capture range: CL - U
1. Increase the frequency of SG9 until the VCO is out of locked-oscillation.
2. Decrease the frequency of SG9 and measure the frequency fU when the
VCO locks.
CL - U = fU - 58.75
(MHz)
8. Capture range: CL - L
1. Decrease the frequency of SG9 until the VCO is out of locked-oscillation.
2. Increase the frequency of SG9 and measure the frequency fL when the
VCO locks.
CL - L = 58.75 - fL
(MHz)
9. Capture range: CL - T
CL - T = CL - U + CL - L
(MHz)
MITSUBISHI [ Mitsubishi Group ]
